Category:ISO 639-3 avoided double redirects

These ISO 639-3 links link back to a language-family, history, or writing-system article that mentions or gives a brief description of the language in question, rather than to a dedicated article. This is generally because there is not enough info on the language to warrant a separate article: indeed, two of these had articles which were deleted as non-notable conlangs, and other ISO languages are unidentified or do not even exist. If articles are created, these links should be redirected to them.